Stadium: Court 17 Round: 25 Ground: Clay
| ITF M15 Antalya | 2021/06/15 10:45 | Oleg Prihodko v Savva Polukhin | 6-3,2-6,6-10 |
| ITF M15 Antalya | 2021/06/14 07:30 | Oleg Prihodko v Michalis Sakellaridis | 6-0,6-4 |
| ITF M15 Antalya | 2021/06/13 07:30 | Oleg Prihodko v Aleksandar Tomas | 6-2,6-2 |
| ITF M15 Novomoskovsk | 2021/06/04 08:30 | Yurii Dzhavakian v Oleg Prihodko | 1-6,6-4,12-10 |
| ITF M15 Novomoskovsk | 2021/06/03 16:00 | Oleg Prihodko v Dzianis Zharyn | 6-2,6-1 |
| ITF M15 Novomoskovsk | 2021/05/26 13:05 | Oleg Prihodko v Wojciech Marek | 4-6,7-6,3-6 |
| ITF M25 Vic | 2021/05/17 08:00 | Oleg Prihodko v Facundo Juarez | 7-6,1-6,7-10 |
| ITF M25 Vic | 2021/05/16 07:00 | Oleg Prihodko v Jordi Mas De Ugarte | 6-2,6-0 |
| ITF M15 Antalya | 2021/06/18 07:30 | Mariano Kestelboim v Gonzalo Lama | 2-6,2-6 |
| ITF M15 Antalya | 2021/06/17 07:25 | Mariano Kestelboim v Anatoliy Petrenko | 6-1,6-0 |
| ITF M15 Antalya | 2021/06/09 10:40 | Mariano Kestelboim v Timo Stodder | 3-6,3-6 |
| ITF M15 Monastir | 2021/05/18 12:35 | Mariano Kestelboim v Guy Orly Iradukunda | 1-6,4-6 |
| ITF M15 Monastir | 2021/05/11 08:30 | Mariano Kestelboim v Yunseong Chung | 7-6,1-6,2-6 |
| ITF M15 Monastir | 2021/05/04 13:10 | Mariano Kestelboim v Alibek Kachmazov | 6-1,6-7,3-6 |
| ITF M15 Monastir | 2021/04/29 11:20 | Mariano Kestelboim v Yuta Kawahashi | 1-6,1-6 |
| ITF M15 Monastir | 2021/04/27 09:55 | Mariano Kestelboim v Ervin H Eminefendic | 6-3,6-0 |